Add some beautiful bridge-rails (wood, iron, stone-brick) that can be placed on water, and change default Big-electric-pole and rail-signals to be placeable on water.
I play Krastorio 2 which changes the recipe for rails. Currently I was this mod to have the bridges use steel beams for rails (which K2 calls them steel plates.
I'd like to add that I deliberately put bbr-fix under the Unlicense so you can just steal it if you want :)
Just give me a quick poke here if you do, so I can deprecate it.